Reader Andreas wrote to tell us about a neat little trick for tiling a pair of windows in Windows.

With the first window open, press and hold Ctrl, then right-click the second window's button in the taskbar and choose Tile Horizontally or Tile Vertically in the pop-up that appears. Presto: Two-click tiling of two windows. Right-click a third button to add a third window to the mix, and so on. (Turns out you can use this grouping method to close or cascade windows as well.) This tip also works in Vista, though the language is a bit different: "Show Windows Stacked" and "Show Windows Side by Side." What's your favorite tiling tip? Tell us about it in the comments.